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<a name="1" href="#1">1</a>   <em class="jxr_comment">/*</em>
<a name="2" href="#2">2</a>   <em class="jxr_comment"> * PropertyAnimator.java</em>
<a name="3" href="#3">3</a>   <em class="jxr_comment"> *</em>
<a name="4" href="#4">4</a>   <em class="jxr_comment"> * Created on August 3, 2007, 2:39 PM</em>
<a name="5" href="#5">5</a>   <em class="jxr_comment"> *</em>
<a name="6" href="#6">6</a>   <em class="jxr_comment"> * This library is free software; you can redistribute it and/or</em>
<a name="7" href="#7">7</a>   <em class="jxr_comment"> * modify it under the terms of the GNU Lesser General Public</em>
<a name="8" href="#8">8</a>   <em class="jxr_comment"> * License as published by the Free Software Foundation; either</em>
<a name="9" href="#9">9</a>   <em class="jxr_comment"> * version 2.1 of the License, or (at your option) any later version.</em>
<a name="10" href="#10">10</a>  <em class="jxr_comment"> *</em>
<a name="11" href="#11">11</a>  <em class="jxr_comment"> * This library is distributed in the hope that it will be useful,</em>
<a name="12" href="#12">12</a>  <em class="jxr_comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</em>
<a name="13" href="#13">13</a>  <em class="jxr_comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU</em>
<a name="14" href="#14">14</a>  <em class="jxr_comment"> * Lesser General Public License for more details.</em>
<a name="15" href="#15">15</a>  <em class="jxr_comment"> *</em>
<a name="16" href="#16">16</a>  <em class="jxr_comment"> * You should have received a copy of the GNU Lesser General Public</em>
<a name="17" href="#17">17</a>  <em class="jxr_comment"> * License along with this library; if not, write to the Free Software</em>
<a name="18" href="#18">18</a>  <em class="jxr_comment"> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA</em>
<a name="19" href="#19">19</a>  <em class="jxr_comment"> */</em>
<a name="20" href="#20">20</a>  <strong class="jxr_keyword">package</strong> com.totsp.gwittir.client.fx;
<a name="21" href="#21">21</a>  
<a name="22" href="#22">22</a>  <strong class="jxr_keyword">import</strong> com.google.gwt.user.client.Timer;
<a name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> com.totsp.gwittir.client.beans.Introspector;
<a name="24" href="#24">24</a>  <strong class="jxr_keyword">import</strong> com.totsp.gwittir.client.beans.Method;
<a name="25" href="#25">25</a>  <strong class="jxr_keyword">import</strong> com.totsp.gwittir.client.beans.Property;
<a name="26" href="#26">26</a>  
<a name="27" href="#27">27</a>  
<a name="28" href="#28">28</a>  <em class="jxr_javadoccomment">/**</em>
<a name="29" href="#29">29</a>  <em class="jxr_javadoccomment"> *</em>
<a name="30" href="#30">30</a>  <em class="jxr_javadoccomment"> * @author &lt;a href="<a href="mailto:cooper@screaming-penguin.com" target="alexandria_uri">mailto:cooper@screaming-penguin.com</a>"&gt;Robert "kebernet" Cooper&lt;/a&gt;</em>
<a name="31" href="#31">31</a>  <em class="jxr_javadoccomment"> */</em>
<a name="32" href="#32">32</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../com/totsp/gwittir/client/fx/PropertyAnimator.html">PropertyAnimator</a> {
<a name="33" href="#33">33</a>      <strong class="jxr_keyword">private</strong> <a href="../../../../../com/totsp/gwittir/client/fx/AnimationFinishedCallback.html">AnimationFinishedCallback</a> callback;
<a name="34" href="#34">34</a>      <strong class="jxr_keyword">private</strong> Object target;
<a name="35" href="#35">35</a>      <strong class="jxr_keyword">private</strong> <a href="../../../../../com/totsp/gwittir/client/fx/MutationStrategy.html">MutationStrategy</a> strategy;
<a name="36" href="#36">36</a>      <strong class="jxr_keyword">private</strong> Object finalValue;
<a name="37" href="#37">37</a>      <strong class="jxr_keyword">private</strong> Object initialValue;
<a name="38" href="#38">38</a>      <strong class="jxr_keyword">private</strong> <a href="../../../../../com/totsp/gwittir/client/beans/Property.html">Property</a> property;
<a name="39" href="#39">39</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> duration;
<a name="40" href="#40">40</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> stepTime;
<a name="41" href="#41">41</a>  
<a name="42" href="#42">42</a>      <strong class="jxr_keyword">private</strong> Timer timer;
<a name="43" href="#43">43</a>      <em class="jxr_comment">//TODO examine step time real results and increase animation time to match.</em>
<a name="44" href="#44">44</a>      <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Creates a new instance of <a href="../../../../../com/totsp/gwittir/client/fx/PropertyAnimator.html">PropertyAnimator</a> */</em>
<a name="45" href="#45">45</a>      <strong class="jxr_keyword">public</strong> <a href="../../../../../com/totsp/gwittir/client/fx/PropertyAnimator.html">PropertyAnimator</a>(Object target, String propertyName,
<a name="46" href="#46">46</a>          Object initialValue, Object finalValue, <a href="../../../../../com/totsp/gwittir/client/fx/MutationStrategy.html">MutationStrategy</a> strategy,
<a name="47" href="#47">47</a>          <strong class="jxr_keyword">int</strong> duration, <strong class="jxr_keyword">int</strong> stepTime, <a href="../../../../../com/totsp/gwittir/client/fx/AnimationFinishedCallback.html">AnimationFinishedCallback</a> callback) {
<a name="48" href="#48">48</a>          <strong class="jxr_keyword">this</strong>.target = target;
<a name="49" href="#49">49</a>          <strong class="jxr_keyword">this</strong>.property = Introspector.INSTANCE.getDescriptor(target)
<a name="50" href="#50">50</a>                                               .getProperty(propertyName);
<a name="51" href="#51">51</a>  
<a name="52" href="#52">52</a>          <strong class="jxr_keyword">if</strong>((property == <strong class="jxr_keyword">null</strong>)
<a name="53" href="#53">53</a>                  || (
<a name="54" href="#54">54</a>                      (property.getAccessorMethod() == <strong class="jxr_keyword">null</strong>)
<a name="55" href="#55">55</a>                      &amp;&amp; (initialValue == <strong class="jxr_keyword">null</strong>)
<a name="56" href="#56">56</a>                  ) || (property.getMutatorMethod() == <strong class="jxr_keyword">null</strong>)) {
<a name="57" href="#57">57</a>              <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> RuntimeException(<span class="jxr_string">"Invalid property."</span>);
<a name="58" href="#58">58</a>          }
<a name="59" href="#59">59</a>  
<a name="60" href="#60">60</a>          <strong class="jxr_keyword">try</strong> {
<a name="61" href="#61">61</a>              <strong class="jxr_keyword">this</strong>.initialValue = (initialValue == <strong class="jxr_keyword">null</strong>)
<a name="62" href="#62">62</a>                  ? property.getAccessorMethod().invoke(target, <strong class="jxr_keyword">null</strong>) : initialValue;
<a name="63" href="#63">63</a>          } <strong class="jxr_keyword">catch</strong>(Exception e) {
<a name="64" href="#64">64</a>              <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> RuntimeException(e);
<a name="65" href="#65">65</a>          }
<a name="66" href="#66">66</a>  
<a name="67" href="#67">67</a>          <strong class="jxr_keyword">this</strong>.finalValue = finalValue;
<a name="68" href="#68">68</a>          <strong class="jxr_keyword">this</strong>.strategy = strategy;
<a name="69" href="#69">69</a>          <strong class="jxr_keyword">this</strong>.callback = callback;
<a name="70" href="#70">70</a>          <strong class="jxr_keyword">this</strong>.duration = duration;
<a name="71" href="#71">71</a>          <strong class="jxr_keyword">this</strong>.stepTime = stepTime;
<a name="72" href="#72">72</a>      }
<a name="73" href="#73">73</a>  
<a name="74" href="#74">74</a>      <strong class="jxr_keyword">public</strong> <a href="../../../../../com/totsp/gwittir/client/fx/PropertyAnimator.html">PropertyAnimator</a>(Object target, String propertyName,
<a name="75" href="#75">75</a>          Object finalValue, <a href="../../../../../com/totsp/gwittir/client/fx/MutationStrategy.html">MutationStrategy</a> strategy) {
<a name="76" href="#76">76</a>          <strong class="jxr_keyword">this</strong>(target, propertyName, <strong class="jxr_keyword">null</strong>, finalValue, strategy, 1000, 50, <strong class="jxr_keyword">null</strong>);
<a name="77" href="#77">77</a>      }
<a name="78" href="#78">78</a>  
<a name="79" href="#79">79</a>      <strong class="jxr_keyword">public</strong> <a href="../../../../../com/totsp/gwittir/client/fx/PropertyAnimator.html">PropertyAnimator</a>(Object target, String propertyName,
<a name="80" href="#80">80</a>          Object finalValue, <a href="../../../../../com/totsp/gwittir/client/fx/MutationStrategy.html">MutationStrategy</a> strategy, <strong class="jxr_keyword">int</strong> duration) {
<a name="81" href="#81">81</a>          <strong class="jxr_keyword">this</strong>(target, propertyName, <strong class="jxr_keyword">null</strong>, finalValue, strategy, duration, 50,
<a name="82" href="#82">82</a>              <strong class="jxr_keyword">null</strong>);
<a name="83" href="#83">83</a>      }
<a name="84" href="#84">84</a>  
<a name="85" href="#85">85</a>      <strong class="jxr_keyword">public</strong> <a href="../../../../../com/totsp/gwittir/client/fx/PropertyAnimator.html">PropertyAnimator</a>(Object target, String propertyName,
<a name="86" href="#86">86</a>          Object initialValue, Object finalValue, <a href="../../../../../com/totsp/gwittir/client/fx/MutationStrategy.html">MutationStrategy</a> strategy,
<a name="87" href="#87">87</a>          <strong class="jxr_keyword">int</strong> duration) {
<a name="88" href="#88">88</a>          <strong class="jxr_keyword">this</strong>(target, propertyName, initialValue, finalValue, strategy,
<a name="89" href="#89">89</a>              duration, 50, <strong class="jxr_keyword">null</strong>);
<a name="90" href="#90">90</a>      }
<a name="91" href="#91">91</a>  
<a name="92" href="#92">92</a>      <strong class="jxr_keyword">public</strong> <a href="../../../../../com/totsp/gwittir/client/fx/PropertyAnimator.html">PropertyAnimator</a>(Object target, String propertyName,
<a name="93" href="#93">93</a>          Object finalValue, <a href="../../../../../com/totsp/gwittir/client/fx/MutationStrategy.html">MutationStrategy</a> strategy, <strong class="jxr_keyword">int</strong> duration,
<a name="94" href="#94">94</a>          <a href="../../../../../com/totsp/gwittir/client/fx/AnimationFinishedCallback.html">AnimationFinishedCallback</a> callback) {
<a name="95" href="#95">95</a>          <strong class="jxr_keyword">this</strong>(target, propertyName, <strong class="jxr_keyword">null</strong>, finalValue, strategy, duration, 50,
<a name="96" href="#96">96</a>              callback);
<a name="97" href="#97">97</a>      }
<a name="98" href="#98">98</a>  
<a name="99" href="#99">99</a>      <strong class="jxr_keyword">public</strong> <a href="../../../../../com/totsp/gwittir/client/fx/PropertyAnimator.html">PropertyAnimator</a>(Object target, String propertyName,
<a name="100" href="#100">100</a>         Object initialValue, Object finalValue, <a href="../../../../../com/totsp/gwittir/client/fx/MutationStrategy.html">MutationStrategy</a> strategy,
<a name="101" href="#101">101</a>         <strong class="jxr_keyword">int</strong> duration, <a href="../../../../../com/totsp/gwittir/client/fx/AnimationFinishedCallback.html">AnimationFinishedCallback</a> callback) {
<a name="102" href="#102">102</a>         <strong class="jxr_keyword">this</strong>(target, propertyName, initialValue, finalValue, strategy,
<a name="103" href="#103">103</a>             duration, 50, callback);
<a name="104" href="#104">104</a>     }
<a name="105" href="#105">105</a> 
<a name="106" href="#106">106</a>     <strong class="jxr_keyword">void</strong> invoke(<a href="../../../../../com/totsp/gwittir/client/beans/Method.html">Method</a> method, Object value) <strong class="jxr_keyword">throws</strong> Exception {
<a name="107" href="#107">107</a>         <strong class="jxr_keyword">if</strong>(<strong class="jxr_keyword">this</strong>.property.getType() == <strong class="jxr_keyword">null</strong>) {
<a name="108" href="#108">108</a>             method.invoke(<strong class="jxr_keyword">this</strong>.target, (Object[]) value);
<a name="109" href="#109">109</a>         } <strong class="jxr_keyword">else</strong> {
<a name="110" href="#110">110</a>             Object[] args = { value };
<a name="111" href="#111">111</a>             method.invoke(<strong class="jxr_keyword">this</strong>.target, args);
<a name="112" href="#112">112</a>         }
<a name="113" href="#113">113</a>     }
<a name="114" href="#114">114</a> 
<a name="115" href="#115">115</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> start() {
<a name="116" href="#116">116</a>         <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> startTime = System.currentTimeMillis();
<a name="117" href="#117">117</a>         <strong class="jxr_keyword">final</strong> <a href="../../../../../com/totsp/gwittir/client/fx/PropertyAnimator.html">PropertyAnimator</a> instance = <strong class="jxr_keyword">this</strong>;
<a name="118" href="#118">118</a> 
<a name="119" href="#119">119</a>         <strong class="jxr_keyword">try</strong> {
<a name="120" href="#120">120</a>             invoke(<strong class="jxr_keyword">this</strong>.property.getMutatorMethod(), <strong class="jxr_keyword">this</strong>.initialValue);
<a name="121" href="#121">121</a>         } <strong class="jxr_keyword">catch</strong>(Exception e) {
<a name="122" href="#122">122</a>             <strong class="jxr_keyword">if</strong>(<strong class="jxr_keyword">this</strong>.callback != <strong class="jxr_keyword">null</strong>) {
<a name="123" href="#123">123</a>                 <strong class="jxr_keyword">this</strong>.callback.onFailure(<strong class="jxr_keyword">this</strong>, e);
<a name="124" href="#124">124</a> 
<a name="125" href="#125">125</a>                 <strong class="jxr_keyword">return</strong>;
<a name="126" href="#126">126</a>             }
<a name="127" href="#127">127</a>         }
<a name="128" href="#128">128</a> 
<a name="129" href="#129">129</a>          timer= <strong class="jxr_keyword">new</strong> Timer() {
<a name="130" href="#130">130</a>                 <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">long</strong> lastStep = System.currentTimeMillis();
<a name="131" href="#131">131</a>                 <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> run() {
<a name="132" href="#132">132</a>                     <strong class="jxr_keyword">try</strong> {
<a name="133" href="#133">133</a>                         <strong class="jxr_keyword">double</strong> percentComplete = (<strong class="jxr_keyword">double</strong>) (
<a name="134" href="#134">134</a>                                 System.currentTimeMillis() - startTime
<a name="135" href="#135">135</a>                             ) / (<strong class="jxr_keyword">double</strong>) duration;
<a name="136" href="#136">136</a>                         Object newValue = strategy.mutateValue(initialValue,
<a name="137" href="#137">137</a>                                 finalValue, percentComplete);
<a name="138" href="#138">138</a> 
<a name="139" href="#139">139</a>                         <strong class="jxr_keyword">if</strong>(percentComplete &lt; 1) {
<a name="140" href="#140">140</a>                             invoke(property.getMutatorMethod(), newValue);
<a name="141" href="#141">141</a>                         } <strong class="jxr_keyword">else</strong> {
<a name="142" href="#142">142</a>                             invoke(property.getMutatorMethod(), finalValue);
<a name="143" href="#143">143</a> 
<a name="144" href="#144">144</a>                             <strong class="jxr_keyword">if</strong>(callback != <strong class="jxr_keyword">null</strong>) {
<a name="145" href="#145">145</a>                                 callback.onFinish(instance);
<a name="146" href="#146">146</a>                             }
<a name="147" href="#147">147</a>                             
<a name="148" href="#148">148</a>                             timer.cancel();
<a name="149" href="#149">149</a>                             <strong class="jxr_keyword">return</strong>;
<a name="150" href="#150">150</a>                         }
<a name="151" href="#151">151</a>                     } <strong class="jxr_keyword">catch</strong>(Exception e) {
<a name="152" href="#152">152</a>                         <strong class="jxr_keyword">if</strong>(callback != <strong class="jxr_keyword">null</strong>) {
<a name="153" href="#153">153</a>                             callback.onFailure(instance, e);
<a name="154" href="#154">154</a>                             timer.cancel();
<a name="155" href="#155">155</a> 
<a name="156" href="#156">156</a>                             <strong class="jxr_keyword">return</strong>;
<a name="157" href="#157">157</a>                         }
<a name="158" href="#158">158</a>                     }
<a name="159" href="#159">159</a>                     <strong class="jxr_keyword">if</strong>( lastStep - System.currentTimeMillis() &gt; stepTime * 2 ){
<a name="160" href="#160">160</a>                         stepTime = (<strong class="jxr_keyword">int</strong>) lastStep - (<strong class="jxr_keyword">int</strong>) System.currentTimeMillis();
<a name="161" href="#161">161</a>                     }
<a name="162" href="#162">162</a>                     timer.schedule(stepTime);
<a name="163" href="#163">163</a>                 }
<a name="164" href="#164">164</a>                
<a name="165" href="#165">165</a>             };
<a name="166" href="#166">166</a>             <strong class="jxr_keyword">this</strong>.timer.schedule( <strong class="jxr_keyword">this</strong>.stepTime );
<a name="167" href="#167">167</a>         
<a name="168" href="#168">168</a>     }
<a name="169" href="#169">169</a>     
<a name="170" href="#170">170</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> cancel(){
<a name="171" href="#171">171</a>         timer.cancel();
<a name="172" href="#172">172</a>         <strong class="jxr_keyword">if</strong>( <strong class="jxr_keyword">this</strong>.callback != <strong class="jxr_keyword">null</strong> ){
<a name="173" href="#173">173</a>             callback.onFailure(<strong class="jxr_keyword">this</strong>, <strong class="jxr_keyword">null</strong>);
<a name="174" href="#174">174</a>         }
<a name="175" href="#175">175</a>     }
<a name="176" href="#176">176</a> }
</pre>
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